Insulated-gate bipolar transistor junction temperature estimation based on ℋ∞ robust controller in wind energy applications

Abstract

This article presents lifetime estimation using robust control based on thermal path degradation condition of insulated-gate bipolar transistor wind power modules. Online measurements of the on-state voltage [Formula: see text] are considered to be a promising method for obtaining a thermal-sensitive electrical parameter for wire-bond lift-off. This parameter demonstrates a good correlation with junction temperature. Due to the harsh environment, disturbances and uncertain parameters are founded within the compact set of wind energy generation systems. The uncertainty sacrifices some degree of accuracy of junction temperature measurements. Hence, robust control theory has been utilized to synthesize [Formula: see text] controller for the thermal impedance of high-power insulated-gate bipolar transistors. To study this reliability problem, an integrated model of wind energy generation system is built in MATLAB/Simulink for the closed-loop system. Simulation results show the benefit of the designed controller compared to the open-loop system in terms of thermal cycles of junction temperature and lifetime estimation.

Why Does the PV Solar Power Plant Operate Ineffectively?

“…The use of high-performance power electronics (HPPE) double conversion was recently attempted [83] to maximize the system's efficiency and therefore its profitability. Many factors should be considered when estimating inverters, such as the electrical yield (kWh/kW), inverter's lifespan and warranty, modularity, indoor vs. outdoor installation, considerations inside the cabinet, high and low ambient temperatures, and transformer isolation [84].…”

“…where V OFF and I ON are the voltage at the OFF-state and the current at the ON-state, t f i is the current fall time for the device, and F s is the switching frequency of the converter [84].…”